The correct answer is to create a security profile group containing the IPS profile and apply it to the policy. This is necessary because FortiGate does not allow you to apply an IPS profile directly to a firewall policy; instead, IPS inspection is delivered through a security profile group, which bundles the IPS profile with other inspection tools like antivirus or web filtering. On the Fortinet NSE 4 Network Security Professional exam, this concept tests your understanding of how security profiles are layered onto policies—a common trap is thinking you can toggle IPS on within the policy itself, but the exam expects you to know that the profile group is the mandatory container. A helpful memory tip: think of the security profile group as a toolbox; you must put the IPS tool inside it before you can assign the toolbox to the policy.
NSE4 Firewall Policies and NAT Practice Question
This NSE4 practice question tests your understanding of firewall policies and nat. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A FortiGate admin wants to ensure that traffic destined to a specific web server is inspected by an IPS profile. Which configuration is necessary?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a security profile group containing the IPS profile and apply it to the policy
Option C is correct because in FortiGate, IPS inspection is applied via a security profile group that includes the IPS profile, which is then attached to a firewall policy. The firewall policy itself does not have a direct 'enable IPS' toggle; instead, IPS profiles are part of the security profiles that must be explicitly assigned to the policy to inspect traffic.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Enable IPS on the firewall policy directly
Why it's wrong here
IPS is not enabled directly on policies; it is part of a security profile.
✗
Set the policy's action to 'IPS'
Why it's wrong here
There is no such action; policies have actions like accept, deny, etc.
✓
Create a security profile group containing the IPS profile and apply it to the policy
Why this is correct
Security profiles are applied to policies via security policy groups.
Related concept
Read the scenario before looking for a memorised answer.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think IPS can be enabled directly on the policy or that a special policy action exists for IPS, but FortiGate requires IPS to be applied as a security profile, not as a policy attribute.
Detailed technical explanation
How to think about this question
Under the hood, FortiGate uses a flow-based or proxy-based inspection engine where IPS profiles are part of the security profile chain. When a security profile group containing an IPS profile is applied to a firewall policy, the FortiGate inspects the traffic against the IPS signatures in real time, which is critical for detecting and blocking exploits. In a real-world scenario, an admin might combine an IPS profile with an antivirus profile in the same group to provide layered protection for a web server.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the NSE4 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Firewall Policies and NAT — This question tests Firewall Policies and NAT — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a security profile group containing the IPS profile and apply it to the policy — Option C is correct because in FortiGate, IPS inspection is applied via a security profile group that includes the IPS profile, which is then attached to a firewall policy. The firewall policy itself does not have a direct 'enable IPS' toggle; instead, IPS profiles are part of the security profiles that must be explicitly assigned to the policy to inspect traffic.
What should I do if I get this NSE4 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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